Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. In Hierarchy create Label Element (Right-click > UI Toolkit > Standard Elements > Label)
3. In “Open UI stage” pop-up press “Continue” and save UXML file
4. In Inspector window, expand Backdrop Filter
5. Add Drop Shadow Function
6. Increase X value
7. Observe Label element in Viewport
Actual results: Increasing Shadow values causes visual artifacts in Viewport
Expected results: No visual artifacts are visible in Viewport when increasing Shadow values
Reproducible with versions: 6000.6.0b1, 6000.6.0b4, 6000.7.0a2
Can’t test with versions: 6000.6.0a7 (Backdrop Filter is not available)
Tested on (OS): macOS Tahoe 26.5.1 (M1) (reproducing), Ubuntu 24.04 (not reproducing)
Notes:
- not reproducing in UI Builder window
- not reproducing when using just Filter shadow